Why might SVG images not display in FireFox?

Question

Mozilla Firefox

Sample code
The problem is the following. For some reason, the image disappears on certain container sizes in FF (try changing the container size to a larger one and the image will appear). The problem is relevant only for some images and only for Mozilla. I could not find any reasons and clues on my own. Can anyone offer some advice on this?

Answer 1

I don't see anything at all, except for 2 squares